Real-time monitoring system for insulation of underground large-power device

Abstract

The embodiment of the invention discloses a real-time monitoring system for insulation of an underground large-power device. The system is characterized in that a 220V onboard single-phase AC power supply is converted into 12V, 5V and 3.3V low-voltage DC power supplies for following circuits through a power module after filtering, rectifying and voltage decreasing by a power module; a main control module is that STM32F107VCT6 is used as a main control chip; the main control module is sued for preprocessing the data acquired by an insulation resistance monitoring module and a leakage current monitoring module and controls a communication module and an upper computer to keep real-time communication; the insulation resistance monitoring module is used for detecting the insulation resistance of the underground large-power device; the insulation resistance monitoring module mainly comprises a single-chip microcomputer C8051F350, an operational amplifier, a relay, three photoelectric couplers, a voltage-stabilized diode, a diode, a capacitor and a plurality of resistors. The system can monitor the insulation resistance of the underground device offline and can be also sued for monitoring the insulation resistance, leakage current, working current and other parameters of the device under electric running on real time.

Description

technical field [0001] The invention belongs to the technical field of electronic detection, and in particular relates to a real-time monitoring system for underwater high-power equipment insulation. Background technique [0002] Compared with the working environment of land equipment, underwater equipment is easily affected by adverse environmental factors such as ablation, corrosion, humidity, and high and low temperature, resulting in a decrease in the insulation performance of the system; secondly, the cables that supply power to the equipment are still in a load-bearing state and are easily squeezed. Under the action of external forces such as compression, tension, bending moment and torque, under the action of deep water pressure and cable tension, its insulation performance is in a state of continuous decline. Due to the above reasons, the equipment will inevitably fail during long-term work. At present, some large-scale equipment at home and abroad must be tested fo...

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Problems solved by technology

[0003] Therefore, in view of the above-mentioned defects in the current prior art, it is necessary to conduct research to provide a solution to solve the defects in the prior art and avoid inconvenient and inaccurate detection of insulating electronics for underwater high-power equipment. The problem

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